noun, masculine/pjɛʁ.pa.pje.si.zo/
pierre-papier-ciseaux is masculine in French.
rock paper scissors
Synonyms: chifoumi, pierre-feuille-ciseaux, feuille-caillou-ciseaux, roche-papier-ciseaux
Calque of Japanese じゃんけんぽん. From pierre (“rock”) + papier (“paper”) + ciseaux (“scissors”).